Harm of the hottest mineral dust and its preventiv

  • Detail

The harm of mineral dust and its preventive measures

I. the generation of mineral dust

mineral dust refers to the fine particles of ore and rock generated in the production process of the mine and can be suspended in the air for a long time, also known as dust. The channel inventory continued to rise in the second half of 2018. The mineral dust suspended in the air is called floating dust, and the settled mineral dust is called falling dust. The name of dust can be determined by the type of ore and rock it produces, such as silica dust, iron ore dust, uranium ore dust, coal dust, asbestos dust, etc. In the process of mine production, such as rock drilling, blasting, shipping, crushing and other operations will produce a large amount of mineral dust

II. The harm of mineral dust

the dust produced in the production of mining operations is extremely harmful. Its existence not only leads to the deterioration of the production environment, intensifies the wear and tear of machinery and equipment, shortens the service life of machinery and equipment, but also endangers the health of workers and leads to various occupational diseases

human body absorbs mineral dust for a long time, which will cause respiratory tract inflammation in light cases and pneumoconiosis in severe cases. According to the different pathogenic dust, pneumoconiosis is divided into silicosis, asbestosis, iron silicosis, coal lung disease, coal silicosis, etc. Some dust can cause bronchial asthma, allergic pneumonia, and even respiratory system tumors. Mineral dust can also directly stimulate the skin and cause skin inflammation; Irritate eyes and cause keratitis; Entering the ear weakens hearing and sometimes leads to inflammation. Fine dust and ultra-fine dust, especially the particle size of

is 0.2 ~ 5 μ Fine dust of M is easily inhaled into the lungs and stored, which is extremely harmful. Therefore, fine dust is also known as respiratory dust

in China, the particle size is usually less than 5 μ M dust is called respiratory dust. Dust entering the respiratory tract with air, with particle size greater than 5 μ M is adhered by mucus secreted by the trachea and spits out with phlegm through coughing; Particle size less than 5 μ After entering the lung cells, M is captured and excreted by phagocytes. If silicon dust enters the lungs, that is, mineral dust containing free silicon dioxide, part of it is discharged from the body, and the remaining 4. Force value sensors of various specifications and 7 experimental speeds are selected. Due to its toxic effect, it destroys the normal function of phagocytes and remains in the lung tissue. The combination of marcek type produces fibrous

lesions and silicon tuberculosis, which gradually develops, and the "lung tissue" will: partially lose elasticity and harden, Become pneumoconiosis

pneumoconiosis is divided into three stages:

(1) - stage. Dyspnea, chest pain and mild cough during heavy physical work

(2) phase II. I feel dyspnea, chest pain, dry cough or cough with phlegm in medium-term physical labor or general work

(3) phase III. Even if you are resting or still, you will feel dyspnea, chest pain, cough with sputum or blood

Copyright © 2011 JIN SHI